Prof. G.G. Chaminda Tushara

Professor

Ph.D (Tokyo) M.Eng (AIT) B.Sc-Eng (Hons) (Peradeniya) AMIE(SL), A.Eng GAP(SL) AP-AEESP (USA) M.ANERGY (S.Korea) M.IWA

Contact info

+94-(0)91-2245765~ 67 Ext: 2121

Mobile: +94-(0)714535480

tusharac@cee.ruh.ac.lk

Room CE 106

Specialization

Micro-pollutant in urban waters (DOM, ARB, Heavy metals, PPCPs, PMMoV)
Sustainable water resource management
Reclaimed water usage
Water quality modeling
Water & waste water treatment
Green Technology

Educational Qualifications

PhD (Eng) in Urban Engineering, The University of Tokyo, Japan (2008)
M.Eng in Environmental Engineering and Management, Asian Institute of Technology (AIT), Thailand (2005)
B.Sc-Eng (Hons) in Civil Engineering, University of Peradeniya, Sri Lanka, November-2002

Professional Qualifications

Professor in Civil and Environmental Engineering, University of Ruhuna ( June 2021 to date)
Senior Lecturer, Department of Civil & Environmental Engineering (Feb 2012 – June 2021)
Visiting Researcher, Environmental Science Center, The University of Tokyo, Japan (April to July 2022)
Senior Lecturer, Department of Civil & Environmental Engineering (Feb 2012 –to date)
Senior Lecturer (on Contract), Faculty of Engineering, South Eastern University, Oluvil, Sri Lanka (Aug 2019 to Aug-2020)
Post-graduate Coordinator of the Department of Civil and Environmental Engineering, University of Ruhuna, Sri Lanka (from 2018 to date)
Chief Examiner (2016, 2017 and 2020) of GCE A/L paper marking for Engineering Technology Stream, Sri Lanka
Sri Lanka academic representative for Asian Network for Environment Research and Energy (A. NERGY), South Korea
Governing Committee Member of Sri Lanka Chapter of International Water Association (IWA)
Visiting Senior Lecturer (September 2014 to date) at the Faculty of Agriculture, University of Ruhuna, Matara, Sri Lanka.
Visiting Senior Lecturer (2017-to date), Master Program, Kotalawala Defense University (KDU), Ratmalana, Sri Lanka.
Visiting Senior Lecturer (2015-to date), Faculty of Graduate Studies, University of Ruhuna, Matara, Sri Lanka
External Research Supervisor (January 2014 to date) of Undergraduate Research thesis in the program of Water Science and Technology, Uwa Wellassa University, Badulla, Sri Lanka.
Visiting Senior Lecturer (July 2012 to 2014) at the Advanced Technological Institute (ATI) in Galle, Sri Lanka.
Expert Researcher (JICA-JST project), Environmental Science Center, The University of Tokyo, Japan (July 2009-Jan 2012)
Post-Doctoral Researcher, The University of Tokyo, Japan (October 2008- July 2009)
PhD candidate, The University of Tokyo, Japan (October 2005- September 2008)
Master candidate, Asian Institute of Technology (August 2003-May 2005)
Instructor, Department of Civil Engineering, University of Peradeniya, Sri Lanka (November 2002-July 2003)

Academic Awards and Scholarships:

President Award for Scientific Publication by the H.E the President of Sri Lanka-year-2018
Co-author of the Outstanding Presentation award at the 6th International Symposium on, Advances in Civil and Environmental Engineering Practices for Sustainable Development (ACEPS-2018), March-2018, Galle, Sri Lanka
Co-author of the Best Poster award at the 14th Vice Chancellor’s Awards Ceremony March 2018, Matara, Sri Lanka
Co-author of the Best Poster award at the 5th International Symposium on, Advances in Civil and Environmental Engineering Practices for Sustainable Development (ACEPS-2017), March-2017, Galle, Sri Lanka
Merit Awards for Scientific Publication by National Research Council (NRC), 2015
Co-author of the Best Poster award at the 11th International Symposium on South East Asian Water Environment, Nov-2014, Bangkok, Thailand
Co-author of the Best Presentation Award at the 8th International Forum on Ecotechnology, Dec-2013, Okinawa, Japan.
Asian Young Professional Award on Water Research at the 10th International Symposium on South East Asian Water Environment, Nov-2012, Hanoi, Vietnam
Excellent Presentation Award at the Water and Environment Technology (WET-2012) Conference, June-2012, Tokyo, Japan
Japanese government scholarship was offered to read for PhD in The University of Tokyo, Japan (2005)
Netherlands government full scholarship, to study Master Degree in the field of Environmental Engineering and Management, in the Asian Institute of Technology (AIT), Thailand (2003)

Memberships

Governing Member, Sri Lanka Chapter of the International Water Association (IWA)
Member, Asian Network for Environment Research and Energy (A. NERGY), South Korea
Associate Professional of Green Building Council, Sri Lanka
Associate Member of Institute of Engineers, Sri Lanka
Member (Associate Professor category) of Association of Environmental Engineering and Science Professors (AEESP), USA
Member, IWA-Young Members Japan Chapter

Research Interests

Research Interests

Teaching

Basic Concept of Environmental Engineering
Water and Wastewater Engineering
Water Quality and Pollution Control
Water Reuse and Reclamation
Integrated Solid Waste Management
Design of Sustainable Green Buildings
Soil Mechanics and Engineering Geology
Advance Engineering Surveying

Other Academic and Professional Activities

Chairperson of the Inter-faculty Dancing and Literature competotion-2018, organized by University of Ruhuna
Chairperson of “Oratory Comepetiton-2016”, organized by the University of Ruhuna
Have experience in organizing several international level academic conferences/ symposiums/ seminars (e.g., International symposium of South East Asia Water Environment, IWA-ASPIRE, ACEPS).
Chairpersons in sessions of many international conferences.
Member of Curriculum Revision Committee of Uwa Wellassa University, Sri Lanka.
Working as a reviewer in international journals and international conferences (e.g., Water Research, Chemosphere, Ecohydrology & Hydrobiology, Journal of Applied Technology in Environmental Sanitation, International Symposium on Southeast Asian Water Environment)
Editorial Board Member of International Journal on Civil Engineering & Urban Planning
Guest Editor at The Scientific World Journal (Special issue of Emerging Water Quality Problems in Developing Countries)
Regularly attending the international Academic & Professional conferences and symposiums in Asia, Europe, US and Australia.
Engaged in several administration activities, project meetings and collaboration work with different stakeholders of various other institutes.
Have also developed several collaboration works and maintained a good rapport with several international academic institutes and private (e.g., The University of Tokyo-Japan, Toyama Prefectural University-Japan, Kanazawa University-Japan,, Asian Institute of Technology (AIT)-Thailand, Chulalongkorn University-Thailand, Environmental Research and Training Center (ERTC)-Thailand, Tezpur University, India, Incheon National University, S.Korea, etc.)
Academic Warden of the Faculty of Engineering, University of Ruhuna (from 2014 to 2017)
Soft Skill Development Coordinator for the Faculty of Engineering, University of Ruhuna (from 2014 to date)
General Secretary to Ruhuna Alumna Association of Civil and Environmental Engineering, University of Ruhuna (2012 to date)

Other involvement

Initial Environmental Evaluation (IEE) for sewerage network, Kirula, Colombo, Sri Lanka (IEE Team Leader)
Environmental Impact Assessment (EIA) for a Sewer Network and Wastewater treatment plant in Hambantota New Town, Sri Lanka
Initial Environmental Evaluation (IEE) for a Wastewater treatment plant in Katargama, Sri Lanka
Environmental Impact Assessment (EIA) for a Sewer Network and Wastewater treatment plant in Chilaw, Sri Lanka
Environmental Impact Assessment (EIA) for a Sewer Network and Wastewater treatment plant in Puttalam, Sri Lanka
Consultancy work of Green Building for National Water Supply & Drainage Board (NWS&DB) in Galle, Sri Lanka
Evaluation of irrigation water quality in Southern Province, Sri Lanka (Collaborative work with Southern Provincial Council)
Design of Air Quality Purification System for Cinnamon Processing Industry, Kosgoda, Galle
Evaluation of Community Owned Water Schemes in Southern Province, Sri Lanka (Collaborative work with Southern Provincial Council)
Several consultancy and collaborative work with NWS&DB, Southern Provincial Council, Irrigation Department, Green Building Council, Sri Lanka

Publications

Refereed International Journal Papers and Book Chapters

Y. Otaki, M. Otaki, T. Chaminda, T. Matsui, R. Bokalamulla, R. Thathsarani, T. Joganathan, “Demand-side water management using alternative water sources based on residential end-use”, Water Practice and Technology, wpt2022031, doi.org/10.2166/wpt.2022.031, 2022.
Manish Kumar, Guangming Jiang, Alok Kumar Thakur, Shreya Chatterjee, Tanushree Bhattacharya, Sanjeeb Mohapatra, Tushara Chaminda, Vinay Kumar Tyagi, Meththika Vithanage, Prosun Bhattacharya, Long D Nghiem, Dibyendu Sarkar, Christian Sonne, Jürgen Mahlknecht, “Lead time of early warning by wastewater surveillance for COVID-19: geographical variations and impacting factors”, Chemical Engineering Journal, 441, 135936, 2022.
Do Thi Thuy Quyen, Masahiro Otaki, Yurina Otaki, Tushara Chaminda, Ishara Sanjeewa Wijesinghe, “Pharmaceutical contaminants in shallow groundwater and their implication to poor sanitation facilities in low‐income countries”, Environmental Toxicology and Chemistry, 41 (2), 266-274, 2022.
GG Tushara Chaminda, (Editorial), “Occurrence and Spread of Emerging Organic Pollutants and Antibiotic Resistance in Urban Waters of Sri Lanka”, Journal of the University of Ruhuna, 9 (1), 1-5, June 2021. ISSN 2659-2053.
Quyen, Do Thi Thuy, Otaki Masahiro, Yurina Otaki, and Tushara Chaminda. “Sewage Markers as Determinants to Differentiate Origins of Emerging Organic Pollutants in an Urban Sri Lankan Water Drainage Network.” Water 13, no. 20, 2898, 2021.
Manish Kumar, Kiran Dhangar, Alok Kumar Thakur, Bhagwana Ram, Tushara Chaminda, Pradeep Sharma, Abhay Kumar, Nirav Raval, Vaibhab Srivastava, Jörg Rinklebe, Keisuke Kuroda, Christian Sonne, Damia Barcelo, “Antidrug Resistance in the Indian Ambient Waters of Ahmedabad during the COVID-19 Pandemic”, Journal of Hazardous Materials, 126125, 2021, ISSN 0304-3894, Available online 24 May 2021.
Abdul KSM, De Silva PMCS, Ekanayake EMDV, Thakshila WAKG, Gunarathna SD, Gunasekara TDKSC, Jayasinghe SS, Asanthi HB, Chandana EPS, Chaminda GGT, Siribaddana SH, Jayasundara N., “Occupational Paraquat and Glyphosate Exposure May Decline Renal Functions among Rural Farming Communities in Sri Lanka”. International Journal of Environmental Research and Public Health, 18(6):3278, 2021.
Payal Mazumder, Ajay Kalamdhad, GG Tushara Chaminda, Manish Kumar, Coalescence of co-infection and antimicrobial resistance with SARS-CoV-2 infection: the blues of post-COVID-19 world, Case Studies in Chemical and Environmental Engineering, Volume 3, 100093, Elsevier, 2021.
BMJK Balasooriya, GGT Chaminda, SK Weragoda, Champika Ellawala Kankanamge, Tomonori Kawakami, Assessment of Groundwater Quality in Sri Lanka Using Multivariate Statistical Techniques, In: Kumar M., Snow D., Honda R., Mukherjee S. (eds) Contaminants in Drinking and Wastewater Sources. Springer Transactions in Civil and Environmental Engineering. Springer, Singapore, 2021.
Manish Kumar, Francisco Munoz-Arriola, Hiroaki Furumai, Tushara Chaminda, Resilience, response, and risk in water systems: shifting management and natural forcings paradigms, Edited Book, Springer Nature, 2020.
Manish Kumar, Tushara Chaminda, Arbind K Patel, Himaya Sewwandi, Payal Mazumder, Madhvi Joshi, Ryo Honda, Prevalence of Antibiotic Resistance in the Tropical Rivers of Sri Lanka and India, Environmental Research, 109765, Academic Press, 2020
Yurina Otaki, Masahiro Otaki, Tushara Chaminda, Yosuke Kishimoto, Yue Nakazawa, Kasun Gimhana, Hygiene risk of waterborne pathogenic viruses in rural communities using onsite sanitation systems and shallow dug wells, Science of The Total Environment, 752, 141775, Elsevier, 2020
MNM Shayan, GG Tushara Chaminda, KC Ellawala, WB Gunawardena, Evaluation of Water Quality of Community Managed Water Supply Schemes (CMWSS) in Galle District, in Resilience, Response, and Risk in Water Systems, 139-150, Springer, Singapore, 2020
TRSB Bokalamulla, GGT Chaminda, Y Otaki, M Otaki, Manish Kumar, Sustainable water management in the Kelani river basin, in Resilience, Response, and Risk in Water Systems, 323-337, Springer, Singapore, 2020
Kumar, M., Chaminda, G.G.T., Honda, R. “Seasonality impels the antibiotic resistance in Kelani River of the emerging economy of Sri Lanka”. Clean Water 3, Nature Publishing Group,1-8, 3, (13-04-2020).
Manish Kumar, Bhagwana Ram, Himaya Sewwandi, Ryo Honda, Tushara Chaminda, “Treatment enhances the prevalence of antibiotic-resistant bacteria and antibiotic resistance genes in the wastewater of Sri Lanka, and India”, 109179, Environmental Research, 2020 (24-01-2020).
Sorn Sovannlaksmy, Ryo Honda, Tushara Chaminda, Manish Kumar, “A review on Antibiotic Resistance Gene (ARG) occurrence and detection in WWTP in Ishikawa, Japan and Colombo, Sri Lanka”, in Emerging Issues in the Water Environment during Anthropocene, 1-14, Springer-Singapore, 2020 (in Printing).
G Wanniarachchi, D Ekanayaka, S Ediriweera, H Asanthi, S Jayasinghe, K Abdul, G Chaminda, C Jayasumana, S Siribaddana, P De Silva, “Emerging Chronic Kidney Disease of uncertain aetiology (CKDu) among rural farming communities in Southern and Uva Provinces of Sri Lanka”, Environmental Epidemiology, (3), 427, LWW
Manish Kumar, Tushara Chaminda, Ryo Honda, Hiroaki Furumai, Vulnerability of urban waters to emerging contaminants in India and Sri Lanka: Resilience framework and strategy, APN Science Bulletin, Issue 9 (1), 2019.
Manish Kumar, Bhagwana Ram, Ryo Honda, Chomphunut Poopipattana, Vu Duc Canh, Tushara Chaminda, Hiroaki Furumai, “Concurrence of antibiotic resistant bacteria (ARB), viruses, pharmaceuticals and personal care products (PPCPs) in ambient waters of Guwahati, India: Urban vulnerability and resilience perspective”, Volume 693, 25, 133640, Science of The Total Environment, 2019.
Kaori Takagia, Masahiro Otaki, Yurina Otaki, Tushara Chaminda, “Availability and public acceptability of residential rainwater use in Sri Lanka”, Journal of Cleaner Production, ISSN 0959-6526, Volume 234, 467-476, 2019.
Konara K.M.T.N.1, Samarasekara G.N., Tushara Chaminda G.G, Surendra Perera, “Comparison of Emission Levels of Passenger Transport Modes in Sri Lanka”, Journal of Atmospheric Pollution, Vol. 7, No. 1, 14-18, 2019.
HM Ayala S Herath, Tomonori Kawakami, Shiori Nagasawa, Yuka Serikawa, Ayuri Motoyama, G Tushara Chaminda, SK Weragoda, SK Yatigammana, AAGD Amarasooriya, “Arsenic, cadmium, lead, and chromium in well water, rice, and human urine in Sri Lanka in relation to chronic kidney disease of unknown etiology”, Vol. 16(2), wh2018070, 2018.
Anindita Gogoi, Payal Mazumder, Vinay Kumar Tyagi, G Tushara Chaminda, Alicia Kyoungjin An, Manish Kumar, “Occurrence and Fate of Emerging Contaminants in Water Environment: A Review”, Groundwater for Sustainable Development, Vol.6:169-180, 2018.
M. Ayala S. Herath, Kazusa Kubota, Tomonori Kawakami, Shiori Nagasawa, Ayuri Motoyama, S. K. Weragoda, G. G. Tushara Chaminda, S. K. Yatigammana, “Potential risk of drinking water to human health in Sri Lanka”, Environmental Forensics Vol. 18 (3), 2017
Pallagae Mangala CS De Silva, Khaja Shameem Mohammed Abdul, Eakanayake MDV Eakanayake, Sudheera Sammanthi Jayasinghe, Channa Jayasumana, Hewa Bandulage Asanthi, Hettiarachigae SD Perera, Gamage G Tushara Chaminda, Ediriweera PS Chandana, Sisira H Siribaddana, “Urinary biomarkers KIM-1 and NGAL for detection of chronic kidney disease of uncertain etiology (CKDu) among agricultural communities in Sri Lanka”, PLoS Negl Trop Dis, 10(9), e0004979. doi: 10.1371/journal.pntd.0004979, 2016.
Anindita Gogoi, G. Tushara Chaminda, Alicia K.J. An, Daniel D Snow, Yusong Li, Manish Kumar, “Influence of ligands on metal speciation, transport and toxicity in a tropical river during wet (monsoon) period”, Chemosphere 163:322-333, 2016.
Honda, T. Watanabe, V. Sawaittayotin, Y. Masago, R. Chulasak, K. Tanong, G. Tushara Chaminda, K. Wongsila, C. Sienglum, V. Sunthonwatthanaphong, A. Poonnotok, W. Chiemchaisri, C. Chiemchaisri, H. Furumai, K. Yamamoto, “Impacts of urbanization on the prevalence of antibiotic-resistant Escherichia coli in the Chaophraya River and its tributaries”, Water Science & Technology 73(2):362-374, 2016.
Manish Kumar, Gurmeet Singh, Tushara Chaminda, Pham Van Quan, and Keisuke Kuroda, “Emerging Water Quality Problems in Developing Countries,” The Scientific World Journal, vol. 2014, Article ID 215848, 2 pages, 2014. doi:10.1155/2014/215848, 2014.
P. Ranawakage, K. C. Ellawala, G.G. Tushara Chaminda, “Root and Leaf Extract Allelopathic Effect of Limnocharis flava on Seed Germination and Growth of Rice”, World Journal of Agricultural Sciences, vol.10, No:1, pp14-17, 2014.
Tushara Chaminda G.G, Hiroaki Furumai, and Variga Sawaittayotin, “Evaluation of pharmaceutical and personal care products (PPCPs) in downstream of Chao Phraya and in raw sewage in Thailand”, In: Southeast Asian water Environment-5, IWA Publishing, London, UK, ISBN: 9781780404950, pp 159-164, 2013.
Tushara Chaminda G.G, Hiroaki Furumai and Variga Sawaittayotin “Occurrence of pharmaceuticals and personal care product (PPCP) in Thailand waters”, In: Southeast Asian Water Environment 5, IWA Publishing, London, UK, ISBN: 9781780404950, pp 165-172, 2013.
P. Ranawakage, K. C. Ellawala, G.G. Tushara Chaminda, “Preliminary study on the influence of water level on the growth and morphology of Limnocharis Flava (L.) Buchenau”, International Journal of Limnology, Vol. 49, pp 249-254, 2013.
G. Tushara Chaminda, Fumiyuki Nakajima, Hiroaki Furumai, Ikuro Kasuga and Futoshi Kurisu, “Metal (Zn, Cu, Cd and Ni) complexation by dissolved organic matter (DOM) in wastewater treatment plant effluent” Journal of Water and Environment Technology, Vol.11, No: 3, pp 153-161, 2013.
Tushara Chaminda G.G, Murakami M. and Furumai H. “Significance of community-owned water resources for sustainable water use towards adaptation to climate change” In Robert A. Meyers (ed.) Encyclopedia of Sustainability Science and Technology, Springer Verlag. US, ISBN 978-0-387-89469-0, Vol. 4, pp. 2319-2348, 2012.
Asako Nishijima, Shinichirou Nakamura, Daisuke Komori, Masashi Kiguchi, Jeanne Fernandez, Jiro Kakehashi, Cherry Mateo, Misato Okaneya, Takahiro Tsunekawa, Hiroaki Yutani, Akiyuki Kawasaki, Kazuo Oki, Keigo Noda, Tomohiro Tobino, G Tushara Chaminda, Hiroyuki Katayama, Taikan Oki, “Survey of Water Quality of the Chao Phraya River Flood in Thailand in 2011 Focusing on Flow and Status of Floodwater”, Journal of Japan Society on Water Environment, Vol. 35, No. 11, pp 187-195, 2012.
Honda, T. watanabe, Y. Masago, R. Chulasak, K. Tanong, G.G Chaminda Tushara, V.Sawaittayotin, K. Wongsila, V.Sunthonwatthanaphong, A. Poonnotok, C Chiemchaisri, H. Furumai, “Distribution of Antibiotic Resistant Escherichia Coli in Chao Phraya River and Its Tributaries in Thailand”, Environmental Engineering Research Journal, Vol. 48 (III), pp 173-178, 2011.
G Tushara Chaminda, Fumiyuki Nakajima and Ikuro Kasuga, “Biological alteration of zinc complexation characteristics of dissolved organic matter in domestic wastewater treatment plant effluent under river water environment”, Journal of Water and Environment Technology, Vol.8, No: 4, pp 403-411, 2010.
G. Tushara Chaminda, F. Nakajima, H. Furumai, I. Kasuga and F. Kurisu, “Comparison of metal (Zn and Cu) complexation characteristics of DOM in urban runoff, domestic wastewater and secondary effluent”, Water science and technology, Vol.62, No: 9, pp 2044-2050, 2010.
Furumai H., Murakami M. and Tushara Chaminda G.G, “Evaluation of Community-owned Water Resources Based on Water Quality Labeling System” In: Water Infrastructure for Sustainable Communities: China and the World, IWA Publishing, London, UK, pp 89-116, 2010.
G. Tushara Chaminda, Nakajima Fumiyuki and Furumai Hiroaki, “Heavy metal (Zn and Cu) complexation and molecular size distribution in wastewater treatment plant effluent”, Water science and technology, Vol.58, No:6, pp 1207-1213, 2008.

Conference Proceedings (Selected Only):

Manish Kumar, Tushara Chaminda, Sulfikar Hanafi, Arbind Patel, Payal Mazumder, Alok Thakur, Ryo Honda, Himaya Sewwandi, Comparative Prevalence and Provenance of Antibiotic-Resistant Bacteria and Antibiotic Resistance Genes in Tropical Rivers of Sri Lanka and India, EGU General Assembly Conference Abstracts, 22121, May-2020
Tushara Chaminda, R. Thathsaranee, J. Tharaniya, Y. Otaki, M. Otaki, T. Aramaki, “Quantification of End-Uses of Residential Water Consumption: A case study in Galle District, Sri Lanka”, Water Environmental Technology (WET2019), Matsuyama, Ehime, Japan, July-2018.
KH Kehelella, GGT Chaminda, GH Silva, R Honda, Manish Kumar, “Water quality modeling in Kelani river downstream”, 6th International Symposium on, Advances in Civil and Environmental Engineering Practices for Sustainable Development (ACEPS-2018), Galle, Sri Lanka, March-2018
RP Somarthna, GH Silva, GGT Chaminda, SK Weragoda, Manish Kumar, “Identifying groundwater recharge zones through MIKE modeling approach: a case study at mid Kelani river, Sri Lanka”, 6th International Symposium on, Advances in Civil and Environmental Engineering Practices for Sustainable Development (ACEPS-2018), Galle, Sri Lanka, March-2018
KMTN Konara, GN Samarasekara, GGT Chaminda, S Perera, AW Dissanayaka, “Development of a Formula to Quantity Emissions Generated from Diesel Vehicles in Sri Lanka”, 7th International Symposium on, Advances in Civil and Environmental Engineering Practices for Sustainable Development (ACEPS-2017), Galle, Sri Lanka, March-2017.
H.D.K.H. Jayasundara, G.N. Samarasekara, K. Nandapala and G.G.T. Chaminda, “Potential of Improving Air Quality and Thermal comfort Via Green Boundary Walls”, Advances in Civil and Environmental Engineering Practices for Sustainable Development (ACEPS-2017), Galle, Sri Lanka, March-2017
C. Kodikara, W. G. Chathuranga, N. C. De Silva, R. D. H. A. Kumara, G. G. T. Chaminda and T. Kawakami, “Removal of Fluoride and Hardness from Groundwater using Carbon Electrolysis and Chicken Bone Char Filtration”, 8th International Perspective on Water Resources and the Environment, January 2016, Colombo, Sri Lanka.
ID Wijesiri, G.T Chaminda, G.H.A.C Silva, “Catchment Protection of Gin Ganga (River) as part of Water Safety Plan (WSP) in Greater Galle Water Supply Scheme (GGWSS)”, 6th International Conference on Structural Engineering and Construction Management 2015, December 2015, Kandy, Sri Lanka.
Naoko Hirayama, Ryo Honda, Tushara Chaminda, Sujithra K. Weragoda, N.I. Wickremasinghe, Gayan Amarasooriya, Yuta Teraoka, Tomonori Kawakami, “A pilot study of water quality and people’s importance level towards sustainable management of Kandy Lake basin, Sri Lanka”, 3rd International Symposium on Advances in Civil and Environmental Engineering Practices for Sustainable Development (ACEPS-2015), March 2015, Galle, Sri Lanka.
Kodikara, D. C., Kumara R. D. H. A., Chaminda, G. G. T. and Kawakami, T., Fluoride and hardness removal from groundwater by electrolysis system with carbon electrodes. 3rd International Symposium on Advances in Civil and Environmental Engineering Practices for Sustainable Development, March 2015, Galle, Sri Lanka.
Naoko Hirayama, Ryo Honda, Tushara Chaminda, Sujithra K. Weragoda, N.I. Wickremasinghe, Gayan Amarasooriya, Yuta Teraoka, Tomonori Kawakami, “Factors affecting people’s preferences on lake function for sustainable management of Kandy Lake, Sri Lanka”, Proceeding of 11th International Symposium on Southeast Asian Water Environment (SEWAE), Bangkok, Thailand, November, 2014. (Won the best poster award).
Tushara Chaminda G.G, Weragoda S.K. and Tomonori Kawakami, Assessment of Groundwater Quality and its Suitability for Drinking Purpose in Sri Lanka, Proceeding of 11th International Symposium on Southeast Asian Water Environment (SEWAE), Bangkok, Thailand, November, 2014.
Weragoda S.K., Tushara Chaminda G.G and Tomonori Kawakami “Evaluation of groundwater quality in 14 districts in Sri Lanka, A collaboration research between Sri Lanka and Japan”, The 1st International Forum on Asian Water Environment Technology, Delhi, India, December 2013.
Nagasawa Shiori, Kawakam Tomonori, Motoyama Ayuri, S. K. Weragoda, Tushara Chaminda G.G and S.K. Yatigammana “The relationship between chronic kidney disease of unknown etiology and the geographical distribution of fluoride and hardness in Sri Lanka”, 8th International Forum on Ecotechnology, Kumejima Island, Okinawa, Japan, December 2013 (Won the best presentation award).
Kubota Kazusa, Nagasawa Shiori, Motoyama Ayuri, Kawakami Tomonori, S. K. Weragoda, Tushara Chaminda G.G and S.K. Yatigammana, “Characteristics of pH, alkalinity, and nitrate of well water in Sri Lanka”, 8th International Forum on Ecotechnology, Kumejima Island, Okinawa, Japan, December 2013.
Kawakami Tomonori, Nagasawa Shiori, Nishino Miki, Miyazaki Hikaru, Motoyama Ayuri, S. K. Weragoda, Tushara Chaminda G.G and S.K. Yatigammana, “Safe drinking water supply in Sri Lanka, a collaborative research between Sri Lanka and Japan”, 8th International Forum on Ecotechnology, Kumejima Island, Okinawa, Japan, December 2013.
Prabodini and G.G. Tushara Chaminda, “Assessment of water quality in the downstream of Nilwala River”, International Symposium on Advances in Civil and Environmental Engineering Practices for Sustainable Development (ACEPS), Galle, Sri Lanka, September 2013
Viraj Ranawakage., Champika Ellawala., and Chaminda G.G.T, “Influence of water availability on the growth and morphology of invasive plant, Mikania micrantha Kunth”, Proceeding of International symposium on advances in civil and environmental engineering practices for sustainable development (ACEPS), Galle, Sri Lanka, September 2013
Tushara Chaminda G.G, Hiroaki Furumai, Variga Sawaittayotin, Ryo Honda, Toru Watanbe, Yoshifumi Masago and Rungnapa Chulasak, “Evaluation of community owned water resources based on water quality information platform (WQIP) in Thailand”, 10th International Symposium on Southeast Asian Water Environment (SEWAE), Hanoi, Vietnam, November, 2012 (Won the “Award for the Asian Young Professional on Water Research”).
G. Tushara Chaminda, Fumiyuki Nakajima, Hiroaki Furumai, Ikuro Kasuga and Futoshi Kurisu, “Metal (Zn, Cu, Cd and Ni) complexation by dissolved organic matter (DOM) in waste water treatment plant effluent” Water Environmental Technology (WET2012), Tokyo, Japan, July 2012. (Won the best presentation award)
Tushara Chaminda G.G, Hiroaki Furumai, and Variga Sawaittayotin, “Evaluation of pharmaceutical and personal care products (PPCPs) in downstream of Chao Phraya and in raw sewage in Thailand”, 9th International Symposium on Southeast Asian Water Environment (SEWAE), Bangkok, Thailand, December 2011.
Tushara Chaminda G.G, Hiroaki Furumai, Variga Sawaittayotin and Varisara Sunthonwatthanaphong, “Pharmaceuticals and personal care products (PPCPs) in wastewaters of industrial estate, municipal area and hospital area in Thailand”, IWA-ASPIRE -2011, Tokyo, Japan, October 2011.
Pimonpan Harnsuk, Nyein NyeinAung, Tushara Chaminda G.G and Hiroaki Furumai, “Speciation of Heavy Metals in Water Environment within and Around an Industrial Estate in Metro Bangkok”, IWA-ASPIRE -2011, Tokyo, Japan, October 2011.
Honda R, Watanabe T, Masago Y, Chulasak R, Tanong K, Tushara Chaminda G. G, Sawaittayothin V, Chiemchaisri C and Furumai H., “Spatial distribution of Escherichia Coli resistant to fluoroquinolones, sulfamethoxazole and tetracycline in the chaophraya river and its tributaries”, Proceedings of the 16th International Symposium on Health-Related Water Microbiology, Water Micro 2011, Rotorua, New Zealand, September 2011.
Tushara Chaminda G.G, Hiroaki Furumai and Variga Sawaittayotin “Occurrence of pharmaceuticals and personal care product (PPCP) in Thailand waters”, 8th International Symposium on Southeast Asian Water Environment, Phuket, Thailand, October 2010.
Pimonpan Harnsuk, Nyein Nyein Aung, Tushara Chaminda G.G and Hiroaki Furumai, “Estimation of labile heavy metals in downstream of the Chao Phraya River using equilibrium model”, 8th International Symposium on Southeast Asian Water Environment, Phuket, Thailand, October 2010.
G Tushara Chaminda, Fumiyuki Nakajima and IkuroKasuga, “Biological alteration of zinc complexation characteristics of dissolved organic matter in domestic wastewater treatment plant effluent under river water environment”, Water and Environment Technology Conference 2010 (WET2010), Yokohama, Japan, June 2010
Rina Resnawati, F. Nakajima, G. Tushara Chaminda and Kazuo Yamamoto, “Variation of zinc uptake and trophically-available fraction in green algae Scenedesmusacutus under different growth media with WWTP effluent”, 44th annual conference of JSWE (Japan Society for Water Environmental), Fukuoka, Japan, March 2010.
Furumai, Tushara Chaminda G.G and M. Murakami “Evaluation of community-owned water resources based on water quality labeling system”, International Conference on Sustainable Water Infrastructure for Cities and Villages of the Future, Beijing, China, November 2009.
G. Tushara Chaminda, F. Nakajima, H. Furumai, I. Kasuga and F. Kurisu, “Comparison of metal (Zn and Cu) complexation characteristics of DOM in different urban wastewaters”, 3rd IWA-ASPIRE conference, Taipei, Taiwan, October 2009.
Hiroaki Furumai, Tushara Chaminda G.G and Michio Murakami “Water quality assessment of water resources in community for development of water quality information platform”, Special Session on “Water Reuse Technology in Tropical Regions” in the 7th International Symposium on Southeast Asian Water Environment, pp.5-6, AIT, Bangkok, Thailand, October 2009.
G. Tushara Chaminda, F. Nakajima, H. Furumai, I. Kasuga and F. Kurisu, “Zn and Cu complexation with DOM in wastewater treatment plant effluent”, 19th annual meeting of SETAC-Europe, Göteborg, Sweden, June 2009.
Rina Resnawati, Fumiyuki Nakajima, G. Tushara Chaminda and Kazuo Yamamoto, “Heavy metal uptake and trophically-available fraction in green algae, Scenedesmusacutus, under various growth conditions”, 18th annual conference of JSEC (Japan Society for Environmental Chemistry), Tsukuba, Japan, June 2009.
G. Tushara Chaminda, F. Nakajima, H. Furumai, I. Kasuga and F. Kurisu, “Characterization of Zn and Cu complexation with DOM in wastewater treatment plant effluent”, 43rd annual conference of JSWE (Japan Society for Water Environmental), Yamaguchi, Japan, March 2009.
G. Tushara Chaminda, F. Nakajima, H. Furumai, I. Kasuga and F. Kurisu, “Zinc complexation by dissolved organic matter in wastewater treatment plant effluent”, 17th annual conference of JSEC (Japan Society for Environmental Chemistry), pp884-885, Kobe, Japan, June 2008.
G. Tushara Chaminda, F. Nakajima, H. Furumai, I. Kasuga and F. Kurisu, “Lability and molecular size distribution of Zn and Cu complexes in wastewater treatment plant effluent”, 28th Annual Meeting of SETAC, Milwaukee, Wisconsin, USA, November 2007.
G. Tushara Chaminda, Nakajima Fumiyuki and Furumai Hiroaki, “Heavy metal (Zn and Cu) complexation and molecular size distribution in wastewater treatment plant effluent”, 2nd IWA – ASPIRE conference, Perth, Australia, October 2007.
G. Tushara Chaminda, F. Nakajima, H. Furumai, I. Kasuga and F. Kurisu, “Zinc complexation and molecular size distribution in sewage treatment plant effluent”, 16th annual conference of JSEC (Japan Society for Environmental Chemistry), Kitakyusyu, Japan, June 2007.
G.T. Chaminda, T. Aramaki, T. Amarasekara, G.B.B Herath and M.S Babel, “Modeling and Assessment of Water Quality in the Kelani River, Sri Lanka”, Proceedings of (IWA) International conference on water management and technology applications in developing countries, Kuala Lumpur, Malaysia, May 2007.
Kodikara, D. C., Kumara R. D. H. A. and Chaminda, G. G. T., 2014. Fluoride and hardness removal from groundwater. 4th Symposium on Recent Advances in Civil Engineering, Faculty of Engineering, University of Ruhuna, Galle, January 2015.
Tushara Chaminda G.G, Samarasekara G.N, Rathnayake R.M.P.I.U,Madushanka E.M.N, Galahitiyawa G.W.S.U, Surendra Perera, Dissanayaka, A.W., Wijayakeerthi, S, “Investigation on the transport related emissions in Sri Lanka”, IESL Annual Sessions, Colombo, Sri Lanka, October 2014.
Viraj Ranawakage, Champika Ellawala and Chaminda G.G.T, “Response of Chromolaena Odoratato Different Soil Textures”, 11th Academic Session, University of Ruhuna, March 2014, Matara, Sri Lanka.
Dissanayaka D.M.R.M, Gunasena N.U.T, Surawimala W.A.I, Chaminda G.G.T, “Evaluation of Ground Water Quality in Southern Sri Lanka”, Annual Research Symposium, Faculty of Engineering, University of Ruhuna, January 2014, Galle, Sri Lanka.
Viraj Ranawakage., Champika Ellawala., and Chaminda G.G.T, Study on Some Invasive Characteristics of Milkaniamicrantha and Chromolaenaodorata, Annual Research Symposium, Faculty of Engineering, University of Ruhuna, January 2014, Galle, Sri Lanka.
Viraj Ranawakage, Champika Ellawala and Chaminda G.G.T, “The Influence of Nutrient Availability on the Growth and Morphology of Chromolaena Odorata” Ruhuna International Science and Technology Conference, Matara, Sri Lanka, January 2014
Prabodini and G.G. Tushara Chaminda, “Water quality assessment in the Walawe River downstream”, IESL Annual Sessions, Colombo, Sri Lanka, October 2013.
G. Tushara Chaminda, “Significance of community-owned water resources for sustainable water use towards adaptation to climate change”, Sri Lanka Water Convention 2013, Colombo, March 2013.
A.S. Kumara, Y.M.H.S. Priyanga, G.G Chaminda Tushara, W.C.H.K. Gunawardana, and S.N. Malkanthi, “Roof material selection for rainwater harvesting in Sri Lanka”, 10th Annual Research Session, University of Ruhuna, Galle, Sri Lanka, January 2013.

Invited Speeches (Selected):

Invited Speaker at Pre-Conference of Environmental Engineering and Monitoring (EMM-2020), Webinar Series, October-2020
Invited Speaker at the International Workshop, Hokkaido Bunkyo University, Hokkaido, Japan, December-2018
Invited Keynote Speaker at the International Symposium of Environment, Eco-Technology and Policy in Asia-2018, held at Kanazawa University, Kanazawa, Japan, March-2108
Guest speaker at the International Symposium of Micropollutant in Urban Eater Environment, Tokyo Institute of Technology, Tokyo, Japan, Feb-2017.
Invited Speaker by Sri Lanka Green Building Council (SLGBC), Colombo, Sri Lanka, 2016, 2017, 2018, 2019 and 2020.
Invited speaker at the IWA–ASPIRE conference, Beijing, China, October-2015
Invited speaker at the International Symposium of Asian Network for Environment Research and Energy (A.NERGY), Incheon, South Korea, 2012, 2013 and 2015
Invited speech at the Matara Divisional Secretary Office to mark the World Water Day, Matara, Sri Lanka, March, 2015
Guest Lecture at the Department of Urban Engineering, University of Tokyo, Tokyo, Japan, December 2014.
Invited speaker at the Symposium of Asian Network for Environment Research and Energy (A.NERGY), Incheon, South Korea, October 2013
Invited speaker at the Symposium of Asian Network for Environment Research and Energy (A.NERGY), Incheon, South Korea, December 2012
Key note speech at the Annual Research Symposium-2012, Uwa-Wellassa University, Badulla, Sri Lanka, November 2012
Invited speaker at the International Workshop on Water Reuse Technology in Tropical Regions (Thai-Japan R&D collaboration), Environmental Research and Training Center (ERTC), Phathumthani, Thailand, March 2012.
Invited Special Lecture at the Head Office of the National Water Supply & Drainage Board (NWS&DB), Colombo, Sri Lanka, July 2012.
Key note speech at the Annual Research Symposium-2011, Sri Lanka Student Association in Japan (SLSAJ), Tokyo, Japan, October 2011.